Explanation:

- Share capital reduction typically involves altering the company's registered capital, which often requires approval beyond regular resolutions.

- Option 1: Resolutions (Shareholders) - Involves decisions made by shareholders, crucial for approving significant changes, but not specifically for reducing share capital without the type specified.

- Option 2: Resolution (BOD) - Board of Directors can initiate capital reduction, but usually needs shareholder approval.

- Option 3: Ordinary Resolution - Generally requires a simple majority. Not adequate for reducing share capital as it involves significant structural changes.

- Option 4: Special Resolution - Requires a higher majority, often 75% approval by shareholders. Used for significant decisions like altering share capital.